Windows Server 2012 R2 Standard is a flexible, powerful, and easy-to-use
server solution. Whether your company is a small business or a large
enterprise, Windows Server R2 2012 Standard can help you cloud optimize
your business.

Windows Server 2012 R2 Standard
enables you to blend your on-premises solutions with the cloud without
having to re-engineer infrastructure, systems management, or
applications. It offers customers scalable, dynamic, and
multitenant-aware cloud infrastructure that helps users connect
across-premises. As a result, IT can respond to business needs with
greater agility and efficiency, and the mobile workforce is able to
access personalized work environments from virtually anywhere.

Hyper-V 2.0 - included in the operating system and provides 16x
improvement in the amount of vCPU and RAM assignable to virtual machines

Live Migration – move virtual machines between physical servers with no downtime or loss of data

Hyper-V Replica – replicate virtual machines to another server in another location every 30 seconds

With Windows Server 2012 R2, it's even easier to deploy and
deliver virtual resources across devices. VDI technologies offer easy
access to a rich, full-fidelity Windows environment running in the
datacenter, from virtually any device. Through Hyper-V and Remote
Desktop Services, Microsoft offers three flexible VDI deployment options
in a single solution: Pooled Desktops, Personal Desktops, and Remote
Desktop Sessions.

Each physical server requires at least one license

Each license covers two CPUs, thus a four CPU server would require two license (one base license and one additional license)

Each license assigned to a physical server grants the use of two Windows Server virtual machines on that physical server

Additionally, a Windows Server 2012 Client Access License (CAL) is required for each user or device that accesses the server

Features

Features:

Take a closer look

With
Windows Server 2012 R2 you can scale to run your most important
workloads with robust recovery options. You'll achieve value quickly
with a wide range of cost-effective, high-performance storage options
and simplified delivery of multi-tenant IT services. You can build,
deploy, operate, and monitor applications on-premises and in the cloud.
Empower users with secure access to corporate resources on the devices
they choose.